/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/PreviewMesh.h
This has to return non-const because of current FDynamicMeshAABBTree3 API, but you should not modify this!
point to the current AABBTree used for preview spatial mesh, or nullptr if not available
[UE::Geometry::FDynamicMeshAABBTree3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMeshAABBTree3) * GetSpatial()